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111 lines
3.8 KiB
Markdown
111 lines
3.8 KiB
Markdown
# `installShellFiles` {#installshellfiles}
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This hook adds helpers that install artifacts like executable files, manpages
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and shell completions.
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It exposes the following functions that can be used from your `postInstall`
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hook:
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## `installBin` {#installshellfiles-installbin}
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The `installBin` function takes one or more paths to files to install as
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executable files.
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This function will place them into [`outputBin`](#outputbin).
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### Example Usage {#installshellfiles-installbin-exampleusage}
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```nix
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{
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nativeBuildInputs = [ installShellFiles ];
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# Sometimes the file has an undersirable name. It should be renamed before
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# being installed via installBin
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postInstall = ''
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mv a.out delmar
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installBin foobar delmar
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'';
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}
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```
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## `installManPage` {#installshellfiles-installmanpage}
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The `installManPage` function takes one or more paths to manpages to install.
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The manpages must have a section suffix, and may optionally be compressed (with
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`.gz` suffix). This function will place them into the correct
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`share/man/man<section>/` directory in [`outputMan`](#outputman).
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### Example Usage {#installshellfiles-installmanpage-exampleusage}
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```nix
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{
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nativeBuildInputs = [ installShellFiles ];
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# Sometimes the manpage file has an undersirable name; e.g. it conflicts with
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# another software with an equal name. It should be renamed before being
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# installed via installManPage
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postInstall = ''
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mv fromsea.3 delmar.3
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installManPage foobar.1 delmar.3
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'';
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}
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```
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## `installShellCompletion` {#installshellfiles-installshellcompletion}
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The `installShellCompletion` function takes one or more paths to shell
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completion files.
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By default it will autodetect the shell type from the completion file extension,
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but you may also specify it by passing one of `--bash`, `--fish`, or
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`--zsh`. These flags apply to all paths listed after them (up until another
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shell flag is given). Each path may also have a custom installation name
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provided by providing a flag `--name NAME` before the path. If this flag is not
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provided, zsh completions will be renamed automatically such that `foobar.zsh`
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becomes `_foobar`. A root name may be provided for all paths using the flag
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`--cmd NAME`; this synthesizes the appropriate name depending on the shell
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(e.g. `--cmd foo` will synthesize the name `foo.bash` for bash and `_foo` for
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zsh).
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### Example Usage {#installshellfiles-installshellcompletion-exampleusage}
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```nix
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{
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nativeBuildInputs = [ installShellFiles ];
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postInstall = ''
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# explicit behavior
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installShellCompletion --bash --name foobar.bash share/completions.bash
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installShellCompletion --fish --name foobar.fish share/completions.fish
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installShellCompletion --zsh --name _foobar share/completions.zsh
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# implicit behavior
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installShellCompletion share/completions/foobar.{bash,fish,zsh}
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'';
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}
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```
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The path may also be a fifo or named fd (such as produced by `<(cmd)`), in which
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case the shell and name must be provided (see below).
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If the destination shell completion file is not actually present or consists of
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zero bytes after calling `installShellCompletion` this is treated as a build
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failure. In particular, if completion files are not vendored but are generated
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by running an executable, this is likely to fail in cross compilation
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scenarios. The result will be a zero byte completion file and hence a build
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failure. To prevent this, guard the completion generation commands.
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### Example Usage {#installshellfiles-installshellcompletion-exampleusage-guarded}
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```nix
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{
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nativeBuildInputs = [ installShellFiles ];
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postInstall = lib.optionalString (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
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# using named fd
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installShellCompletion --cmd foobar \
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--bash <($out/bin/foobar --bash-completion) \
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--fish <($out/bin/foobar --fish-completion) \
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--zsh <($out/bin/foobar --zsh-completion)
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'';
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}
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```
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